Naslov
A Calculation Model for Determining the Bearing Capacity of Strengthened Reinforced Concrete Beams on the Shear

Autori
Kos, Zeljko ; Blikharskyi, Zinovii ; Vegera, Pavlo ; Grynyova, Iryna

Kolaboracija
Department of Building Construction and Bridges, Lviv Polytechnic National University, Bandery Street 12, 79013 Lviv, Ukraine ; Department of Arch

Izvornik
Applied Sciences, Special Issue Concrete Structures: Latest Advances and Prospects for a Sustainable Future (2076-3417) 13 (2023), 8; 1-15

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
reinforced concrete beam ; shear ; FRCM ; bearing capacity ; strengthening ; composite materials ; calculation method

Sažetak
This article presents research on the bearing capacity and methods of calculating reinforced concrete beams on the shear without internal shear reinforcement, which are strengthened with a composite FRCM system. The test samples were divided into two series: the first series—control, in which the variable parameter was the shear span (a/d = 2, a/d = 1.5, and a/d = 1) ; and the second series—reinforced by the FRCM system, without load, and strengthened at different load levels. The method of calculating experimental beams was tested according to the current code and data from the fib report. In this article, recommendations for determining the angle of inclined struts θ, the coefficient of the concrete shear strength CRd, c, and the coefficient of the load level at which strengthening is performed are proposed. The calculation with the these recommendations showed a good convergence of experimental and theoretical data in the 16–29% range, which is a much higher convergence than the calculation without these recommendations.

Izvorni jezik
Engleski

Znanstvena područja
Građevinarstvo, Temeljne tehničke znanosti

POVEZANOST RADA